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Short Communication · Volume 2, Issue 9, Pages 530–534, 29 October 2014 · Open Access

Long-term Ruminal pH Measurement Using Orally Inserted Sensors in Calf

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Article Info ⌄
Journal:
Advances in Animal and Veterinary Sciences
Published:
29 October 2014
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From the article

  • Four T9 data loggers sensors L1, L2, L3, and L4 were orally inserted into the rumen at d0, d7, d14, and d21 respectively to measure ruminal pH every 5 min. Calculated averages pH of 15 min were used to compare the 4 data loggers.
  • Keywords | Calf, Data logger, Long-term pH measurement, Rumen.
  • Readings OF pH from two data loggers were compared at each 15-min intervals and in this case a high intra-class correlation coefficient indicates that the two data loggers provide similar readings.
  • This study showed that oral insertion of T9 data logger is a non-invasive method that could be an acceptable alternative to rumen cannula for pH measurement.

Selected from the article's own text.

Abstract

Yasin Najid1, Yvon Couture2, Sylvain Nichols2, Alian Fournier3, Dany Cinq-Mars4, Younes Chorfi1
1Département de Biomédecine Vétérinaire – Université de Montréal, Canada; 2Département de Sciences cliniques, Faculté de médecine vétérinaire–Université de Montréal, 3200 Sicotte St., P.O. Box 5000, Saint-Hyacinthe, QC, J2S 7C6, Canada; 3 Ministère d’Agriculture, Pêcheries et Alimentation du Québec, 460 Boulevard Louis-Fréchette Nicolet J3T 1Y2, Canada; 4Département des Sciences Animales, Université Laval, 2425 Rue de l’agriculture Québec, QC, G1V 0A6, Canada.
*Correspondence: younes.chorfi@umontreal.ca

Abstract
The objective of this study was to test oral insertion of sensors in calf, and to evaluate their accuracy to measure rumen pH for 28 days. Cannulated Holstein calf (5 mo; 200 kg BW) was used in this study. Four T9 data loggers sensors L1, L2, L3, and L4 were orally inserted into the rumen at d0, d7, d14, and d21 respectively to measure ruminal pH every 5 min. Calculated averages pH of 15 min were used to compare the 4 data loggers. Oral insertions of the data loggers were successfully performed. Data logger L1 was more accurate in the beginning of the experiment than at the end. However, the correlations between calculated pH mean at 15 min (L1 vs L2, L1 vs L3, and L1 vs L4) were consistent. Thus, the T9 data loggers can be used to monitor pH measurement for a long-term period of 28 days.

Keywords: Calf, Data logger, Long-term pH measurement, Rumen

( ) : number of measures

This study showed that oral insertion of T9 data logger is a non-invasive method that could be an acceptable alternative to rumen cannula for pH measurement. However, T9 data loggers were less accurate over time; nevertheless, the intra-class coefficients of correlation showed no difference between the 4 data loggers even though they were used at different time. Thus these devices can be used to monitor SARA for at least 28 days, but a post-standardizations at pH4 and pH7 are recommended.

References

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Long-term Ruminal pH Measurement Using Orally Inserted Sensors in Calf · ResearchersLinks